提交按钮不可点击

Question

这是一个wp主题，一些抱怨提交按钮的用户无法点击。没有这个问题的模式，有时候android有时候ios，有时firefox有时候用户说Chrome按钮不可点击。 我试过这里提到的一些解决方案但是没有用。 我从来没有遇到过这个问题。但是有很多人报道了这个问题。

<form id="submit_question" action="">
                    <input type="hidden" id="qa_nonce" name="qa_nonce" value="<?php echo wp_create_nonce( 'insert_question' ); ?>">
                    <input id="add_tag_text" type="hidden" value="<?php printf(__("You must have %d points to add tag. Current, you have to select existing tags.", ET_DOMAIN), $privi->create_tag  ); ?>" />
                    <div class="form-post">
                        <input type="text" name="post_title" id="question_title" placeholder="<?php _e("Your Question", ET_DOMAIN) ?>">
                        <span id="charNum"><?php echo ae_get_option('max_width_title', 150);?></span>
                    </div>
                    <div class="form-post">
                        <div class="select-categories-wrapper">
                            <div class="select-categories">
                                <select class="select-grey-bg" id="" name="question_category">
                                    <option value=""><?php _e("Select Category",ET_DOMAIN) ?></option>
                                    <?php
                                        $terms = get_terms( 'question_category', array('hide_empty' => 0, 'orderby'    => 'term_group' ) );
                                        $value_type = 'slug';
                                        foreach ($terms as $term) {
                                            if($term->parent == 0){
                                                if($value_type == 'slug') {
                                                    echo "<option value='".$term->slug."'>";
                                                } elseif($value_type == 'id') {
                                                    echo "<option value='".$term->term_id."'>";
                                                }
                                                echo $term->name;
                                                echo "</option>";
                                                foreach ($terms as $value) {
                                                    if($term->term_id == $value->parent){
                                                        if($value_type == 'slug') {
                                                            echo "<option value='".$value->slug."'>";
                                                        } elseif($value_type == 'id') {
                                                            echo "<option value='".$value->term_id."'>";
                                                        }
                                                            echo "--".$value->name;
                                                        echo "</option>";
                                                    }
                                                }
                                            }
                                        }
                                    ?>
                                </select>
                            </div>
                        </div>
                    </div>
                    <?php if(ae_get_option('ae_upload_images')){ ?>
                    <div class="form-post container_upload">
                        <div class="upload_image" id="mobile_images_upload_container">
                            <a href="javascript:void(0)" id="mobile_images_upload_browse_button"><i class="fa fa-image"></i><?php _e("Insert Image", ET_DOMAIN); ?></a>
                            <span class="et_ajaxnonce" id="<?php echo wp_create_nonce( 'et_upload_images' ); ?>"></span>
                            <span id="mobile_images_upload_text">
                            <?php
                            global $max_file_size;
                            printf(__("Size must be less than < %sMB.", ET_DOMAIN),$max_file_size);
                            ?>
                            </span>
                        </div>
                    </div>
                    <?php } ?>
                    <div class="form-post">
                         <?php wp_editor( '', 'post_content', editor_settings_mobile() );?>
                        <!-- <textarea name="post_content" id="" cols="30" rows="10" placeholder="<?php _e("Your Description", ET_DOMAIN) ?>"></textarea> -->
                    </div>
                    <div class="form-post">
                        <input  data-provide="typeahead" type="text" name="" id="question_tags" placeholder="<?php _e('Tag(max 5 tags)',ET_DOMAIN) ?>" />
                    </div>
                    <ul class="post-question-tags" id="tag_list"></ul>
                    <?php if(ae_get_option('gg_question_captcha') && $role != 'administrator'){ ?>
                        <div class="clearfix"></div>
                        <div class="container_captcha">
                            <div class="gg-captcha form-group">
                            <?php ae_gg_recaptcha(); ?>
                            </div>
                        </div>
                    <?php } ?>
                    <div class="group-btn-post">
                        <div class="container">
                            <div class="row">
                                <div class="col-xs-5 no-pad-left"><span class="text"><?php _e("Ask a Question", ET_DOMAIN) ?></span></div>
                                <div class="col-xs-7 text-right">
                                    <button type="submit" class="submit-post-question"><?php _e("Submit", ET_DOMAIN) ?></button>
                                </div>
                            </div>
                        </div>
                    </div>
                </form>